mirror of
https://github.com/opennetworkinglab/onos.git
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e9b4dd7b7e
Replace arping and ping with custom gratuitous arp code Don't block forever on switch.waitConnected() Allow backgrounding bgIperf Change-Id: I6cb10c3c8971e29336a6c6e2deffb5231900d463
76 lines
1.9 KiB
Python
Executable File
76 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python
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import sys
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import os
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import fcntl
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import socket
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from struct import pack
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def getIPAddress(intf):
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#Borrowed from:
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#http://stackoverflow.com/questions/24196932/how-can-i-get-the-ip-address-of-eth0-in-python
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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return socket.inet_ntoa(fcntl.ioctl(
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s.fileno(),
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0x8915, # SIOCGIFADDR
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pack('256s', intf[:15])
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)[20:24])
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def gratuitousArp(intf, ip=None, mac=None):
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#Adapted from:
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#https://github.com/krig/send_arp.py/blob/master/send_arp.py
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sock = socket.socket(socket.AF_PACKET, socket.SOCK_RAW)
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try:
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sock.bind((intf, socket.SOCK_RAW))
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except:
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print 'Device does not exist: %s' % intf
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return
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if not ip:
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try:
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ip = getIPAddress(intf)
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except IOError:
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print 'No IP for %s' % intf
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return
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packed_ip = pack('!4B', *[int(x) for x in ip.split('.')])
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if mac:
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packed_mac = pack('!6B', *[int(x,16) for x in mac.split(':')])
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else:
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packed_mac = sock.getsockname()[4]
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bcast_mac = pack('!6B', *(0xFF,)*6)
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zero_mac = pack('!6B', *(0x00,)*6)
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eth_arp = pack('!H', 0x0806)
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arp_proto = pack('!HHBBH', 0x0001, 0x0800, 0x0006, 0x0004, 0x0001)
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arpframe = [
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## ETHERNET
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# destination MAC addr
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bcast_mac,
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# source MAC addr
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packed_mac,
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# eth proto
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eth_arp,
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## ARP
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arp_proto,
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# sender MAC addr
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packed_mac,
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# sender IP addr
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packed_ip,
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# target hardware addr
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bcast_mac,
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# target IP addr
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packed_ip
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]
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# send the ARP packet
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sock.send(''.join(arpframe))
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if __name__ == "__main__":
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if len(sys.argv) > 1:
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intfs = sys.argv[1:]
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else:
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intfs = os.listdir('/sys/class/net/')
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for intf in intfs:
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gratuitousArp(intf) |